This Court supervises the assets and liabilities of people who die while they are residents of California or who leave property inside this County. Notify Bank of America.We'll ask you for the deceased customer's full legal name and Social Security number to identify their accounts. At this clinic, attorneys can give you information about court procedures, provide court forms, and assist in filling them out. After the death of a loved one, you'll need to file a petition with the Contra Costa County Superior Court to initiate the probate process. Please note: For all account types, we require a death certificate.